Finding the Fourth Proportional to 1,031,238,234.76, 1,423,143,138.84 and 579,195,863.08
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Solution
The fourth proportional to 1,031,238,234.76, 1,423,143,138.84 and 579,195,863.08 is: 799,309,597.73
Step by Step Solution
- Step 1: Write the proportion equation
1,031,238,234.76 : 1,423,143,138.84 = 579,195,863.08 : x - Step 2: Convert to fraction form
1,031,238,234.76/1,423,143,138.84 = 579,195,863.08/x - Step 3: Cross multiply
1,031,238,234.76x = 1,423,143,138.84 × 579,195,863.08 - Step 4: Simplify right side
1,031,238,234.76x = 824,278,618,586,814,080 - Step 5: Solve for x
x = 824,278,618,586,814,080/1,031,238,234.76 - Step 6: Final answer
x = 799,309,597.73
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.